WATCH: Noah Wyle Guest Stars on 'Lab Rats'

By ALEX UNGERMAN

December 02, 2013

After his long tenure as Dr. John Carter, actor Noah Wyle is bringing his ER talents to an all-new holiday-themed episode of Lab Rats tonight on Disney XD.

The episode, titled "Twas the Mission Before Christmas," features Wyle in a lab coat as Dr. Evans, who offers up some light-hearted ribbing to Chase Davenport, the high-strung lead played by Billy Unger.